C#打印Panel问题

2012-10-10 09:28:31 232 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

基于winform的打印标签模板设计器以及打印辅助类最近工作中需要调用打印机功能，基于.net 的PrintDocument 实现调用打印机打印功能，PrintDocument_PrintPage事件进行打印内容的绘制，实际上是通过Graphics 进行画板绘制内容填充最后打印。 private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) { Font font =. 阅读详情

问题，我的panel设置和A4纸一样大小，但是显示器放不下，所以做了滚动条，但是打印时只能打出显示器显示的部分，超出显示器的部分就打不上，怎么办？？？？

private void vistaButton1_Click(object sender, EventArgs e)
{
CaptureScreen();
PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
PrintPreviewDialog cppd = new PrintPreviewDialog();
cppd.Document = pd;
cppd.ShowDialog();
}

void pd_PrintPage(object sender, PrintPageEventArgs e)
{
e.Graphics.DrawImage(memoryImage, 0, 0);

}

[System.Runtime.InteropServices.DllImport("gdi32.dll ")]
public static extern long BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);
private Bitmap memoryImage;
private void CaptureScreen()
{
Graphics mygraphics = this.panel1.CreateGraphics();//创建的是整个panel
Size s = this.panel1.Size;//取panel大小
memoryImage = new Bitmap(s.Width, s.Height, mygraphics);
Graphics memoryGraphics = Graphics.FromImage(memoryImage);
IntPtr dc1 = mygraphics.GetHdc();
IntPtr dc2 = memoryGraphics.GetHdc();
BitBlt(dc2, 0, 0, this.panel1.ClientRectangle.Width, this.panel1.ClientRectangle.Height, dc1, 0, 0, 13369376);
mygraphics.ReleaseHdc(dc1);
memoryGraphics.ReleaseHdc(dc2);

}

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